Belt buckle



FIG. 1 is a perspective view of a belt buckle showing my new design;

FIG. 2 is an isometric view thereof,

FIG. 3 is a right side view thereof,

FIG. 4 is a bottom view thereof; and,

FIG. 5 is an isometric view with surface pattern elements shown in extended positions.

The broken line showing of the back side of the buckle, in FIGS. 1-5, is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a belt buckle, as shown and described. 